norlund



- 1,304,858.. Patented May 20, 1919.

'0'. A. NORLUND.

L'IFTING JACK.

APPLICATION FILED JUNE 1a, 1918 I, INVENTOR WITNESSES I 1 t 26 the accompanying drawing term in" r tent.

Application filed June 18, 1918. Serial 240,655

1 '0 all whom it may concern:

Be it known that I, OLAF A. Notations a citizen of the United. States, residing ht ll illinmsport, in the county of Lyeorning and State of Pennsylvania, liil're invented.

a new and useful Lifting-Jack, of which the following is a SPGQlfiCfiiilOlL This invention has refereiicel to liftingjnclts, and its object is to provide a lifting jack particularly adapted for use in connec-' tion with an automobile. I

The jeek comprises a column in which a rack bar is movable, the rack bar, being "automobile Without the necessity of the one handling; the jack reaching under the automobile, the one bar answering both as a manipulating bar for actuating the'jnck and a handling bar for placing the jack, different sockets being provided for the two purposes.

All the moving; parts of the jack liable to be interfered with by accumulationsof dirt are covered and the pinion employed to tlfittb ate the rackbzu' is reinforced to permit the employment of smaller teeth in greater number th'sn customary, with the advantage of greater structural strength.

The invention will be best understood from a eonsidenation ot the following de tailed description taken inconnection with part or this specification, with the "under ndingr, however, that the invention is not confined to any strict conformity with theshmving of the drawing but may be changed. and modified so long as such clnin x modifications mark no materiel from the salient features ot the invention as expressed. in the appended \iilflllllfh.

In the clrmvi11gsz-- Figure 1 is an elevation jack with the face plate .portions otjthe greening, i nii reth 4 Q an elevation tion of the ack as seen ot site to that of 1 15;. L7

1 being part1 in section and on a 1 or Sifttlfi than Figfl.

g. 3 is a top plan-view of the jack with I some portions in cross section and some poi tions broken away. I

Fig. 4 is ssection of a portion of the jack onthe'line l .";l of Fig.

Retierring to the drawing, there shown a column 1 which may be although is not necessarily, of rectangular shiifpe in cross section, the column having slots 2 formed through opposite Wells at intervals to correspondingly reduce Weight of the structure and to expose the interior thereof to view. Inorderto support the column it is er cted on a sl'ifiieiently extended base 3,

the" column 1 and base 3 being usually cast 7 in one piecev Fitted to slide up and down Within the cohunn 1 is wreck bar 4t shown as of ll-shape in cross section, this light-ening the structure, a 5 along one edge the rack baris formed with teeth At What constitutes the upper end of the reek her, in use, there is provided a swivel heed (has is customary. y

Cast on the column ,ljn offset relation "to one, face thereof is e casing 7 provided with a removable cover The casing 7 is of a size to house a Worm gear 9 and at one side of the .cm'iingg' preferably the lowerI side thereof, is an vmtension 10 of the casing designed to house a worm meshing with the Worm gear 9 The co 8 is shaped to inclose both the norm 9 and; Worm 11 and is held inplaee by screws 1'2 Wherever necessary. 'l. he worm gear S) is" formed on one face with e gear Plnlm'i 13 which may be integral therewith. The pinion is housed, Within a side extension i l: of the casing 7, this casing be igcest in one piece with the column 1 and closed at the end remote from the casing?" At the clo l end the casing 1e hes it projection or l 15 hollowed out to coi'istitute u jourijisl bearing for it pin" 0 16 at that end. i the pinion i3 remote from. the worn: r 9. The same; end of the pinion 13 hits it strenethenins" Web or reintoremnent ll" it? the end oi the teeth oi the pinion wherein; it possible without sat-r "h snmller to n: he t;

or wi se to the pintle 19 on the ,face, of the worm gear 9 remote from the pinion 13.

'- The worm -11 is provided with terminal intles 20, 21 respectively, havingjournal 'arin'gs in the extension of the casing? and the pintle 21 is continued beyond the ex tension 10' in the form of a'socket member 22 provided with an axial socket 23 preferably of square shape in cross section, although not limited'to such particular shape. 'lIhe socket 23 is designed to receive one end of a bar or rod 24 also of square cross section to fit the, socket. 23 and in order to manipulate the bar 24: there is provided a socket brace 25 having a socket member 26 at one end and a handle 27 at the other end, the brace being similar to ormay be the same as the braces of like character employed in automobiles for securing and detaching demountable wheel rims.

Automobile jacks are'more connnonly used for lifting the axles of automobiles in order to elevate the automobile wheels. It is inconvenient to place an automobile jack in position' for use and frequently the clothes 4 of the operator become soiled by contact with wheels or similar parts of the automo-- bile. Again, the usual manipulating means for the jack are of a character requiring the operator to stoop to an extent, causing the manipulation of the jack. especially with heavy automobiles, to be difiicult. To avoid these troubles the worm gear arrangement is employed, this making the lifting ofheavy automobiles'an easy matter and the elongated operatmg rod 24 greatly fac1l1- tates the manipulation because the operator may stand erect or nearly so and a consider-.

able disthnce away from the jack. Moreover, the worm gear is a self-locking structure and the use of pawls and other hold-' ings devices is avoided. .i

In order to place the jack in position to elevate an automobile axle or to remove-1t fromsuch position without the necessity of "the operator stooping to any material extent or coming in contact with partsof the'automobile provision is made whereby the rod 24 may be utilized as a carrying handle to lace the jack under the axle or to remove it from such position while the operator is freed from the necessity of contacting with.

any part of the vehicle or stooping under some part o' f the vehicle. For this purpose a socket or receptacle 28- is formed on the column or post 1, preferably at the junction of the post 1, casing 7 and extension 14, the socket 28 being conveniently Cast in one piece with the neighboring parts. The socket 28 is provided with a mouth 29 shaped to loosely receiwethe bar 24-but tocramp it in the socket when 'the weight of the jack is borne by said rod 24. By making the --mouth 29 of rectangular, or similar, confor- [motion thebar 24 is' cramped to an extent in the socket, and, thojack-may be eonyeu iently carried by the bar .-'o.rrod 2*. without liability of slipping therefrom. Moreover; the socket 28 is located near the of thejack so that there is notendency of, the jack to turn but the jack will hang .pendantly from the end of the rod or bar 2 tisustaining t. In this Way'there is no difiiculty in holdmg the jack in an upright position when suspended from the end of the'bar or rod 24 and during the. operation. of placing the jack' under the axle of the .automobile or remov-- mg 1t therefrom.

All the rotatable gearing isv completely n oughly protectthe person using the Jack The socket 28 permits the placing of the jack wherever desired underthe automobile without requiring any material stooping oi the operator and with the assurance that the jack itself will tend to maintain an upright position even when lif ed so that its base is not resting on anything.

While the body 1 the jack has been described as madein. he form of a casting or castings. it will be understoodthat the parts may be forged or stamped.

\Vhat is claimed is: '1. A lifting jack for automobiles provided with an upright-body containing lifting i'hechanism. said body having a fixed socketlocated near its upper end and a rotatable socket connected to the liftingmeclt anism and located lower than the fixed socket] and a bar or rod interchangeably insertible into the sockets for actuating the liftingmechanism when introduced into the. rotatable socket and for transporting the jack as a whole when introduced into the. fixed sockct. 1

2. A lifting jack having a socket connected to the lifting mechanism and another socket in spaced elation to the first socket and in fixed relationto the jack. and a lifting bar or rod introducible into either socket and constituting a manilnllating rod for the lifting mechanism when introduced into the first-named socket. and a lifting and transporting bar or red when in-trmluced into the second-named socket.

3. A lifting jack for automobiles, profor automobiles pro- \idcd with lifting mechanism, said Jack vided witlrfa column, .a lifting rack bar mov a'ble there n, worm gearing engaging the rack bar and provided with a socket, a rodor bar for entering the socket at one end, means for engaging the bar at the other end to turn it-to actuate the work gearing, and a socket member at a high point on the column for receiving the operating bar for the Worm gearing, whereby the operating bar constitutes a carrying handle for the jack.

4. A lifting jack provided with lifting mechanism including a removable operating bar forthe lifting mechanism, and a socket spaced from the lifting mechanism and into i which one end of the operatingbar is-introduci'ble for supporting and moving the jack bodily from place to place.

5. A .lifting jack provided with lifting mechanism includin member, an elongate operating bar for the lifting mechanism adapted to the rotatable socket, and another socket separated from the rotatable socket and located at a higher point on the lifting jack to receive one end of the operating bar, whereby the latter may be utilized as a carrying member for the lifting jack independent of the rotatable socket.

6. A lifting jack for automobiles, comprising a base member, a column rising.

a' rotatable socket therefrom, a. casing on one side of the post near the top thereof and provided with an axial extension across the post with the end of the extensionclosed, and a socket member at the junction of the casing, axial extension and column, and said casing having an extension on one side in substantially perpendicular relation to the casing, a rack bar in and movable lengthwise of the column, a Worm gear ,in the casing provided with a pinion engaging the rack bar and housed in the axial extension of the casing, a worm housed in the second named extension of the casing in mesh with they worm gear and provided with a socket member exterior to the casing, a removable cover for the casing and second named extension and closing in the Worm gear and worm, and an operating rod or bar fitting in the socket at the end of the Worm and also fitting the socket at the junction of the casing, the column and the axial extension of the casing, to serve as a handle for transporting the jack.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

OLAF A. NORLUND.

Witnesses: GLADYS L. Or'r, DAN D. KLINE.

omr' ssicav 

